Austenitic Ni--Fe base weld material

ABSTRACT

weld-filler material particularly useful in providing enhanced freedom from weld cracking in fully austenitic Fe--Ni--Cr--Mo--Cu material in which the elements P, Cb, Ce+La, C, Si, S, N and O are controlled to low levels and in which the level of manganese is increased to at least 1% and preferably to at least 1.5%. The weld-filler material in weight percent contains: 
     Carbon -- 0.035 Max. 
     Manganese -- 1-4.0 
     Silicon -- 0.20 Max. 
     Phosphorus -- 0.020 Max. 
     Sulfur -- 0.005 Max. 
     Chromium -- 19.0 -26.0 
     Nickel -- 32.5-38 
     Molybdenum -- 2-9 
     Copper -- 3.0-4.0 
     Columbium -- 0.35 Max. 
     Cerium -- 0.01 Max. 
     Boron -- 0.0035 Max. 
     the balance being iron and in which cerium includes cerium plus lanthanum or misch metal.



